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Capital Gains Tax in Australia

The Australian tax system is generally designed to generate money for the Commonwealth government. It is collected by the Australian Taxation Office (ATO) and is used by the government to help cover its expenditure. For individuals, the types of income that are taxed include not only a person’s salary or wages, but also financial gains made when a person sells certain types of assets. This is known as Capital Gains Tax or CGT. CGT is a double-edged sword in that it can either increase or decrease your tax bill, depending on whether you make a gain or a loss on the sale of the asset compared with what it originally cost you.

There are many different taxes in Australia; however, the main source of tax money comes from the taxation of income, which makes up about 75% of total taxation income.


While Australian taxation law is set out in numerous Acts, the one which primarily governs CGT is the Income Tax Assessment Act 1997 (Cth) this Act is also referred to as ITAA97.

When does CGT apply?

Under section 102-20 of the Act, CGT applies to gains or losses made when a CGT event occurs.

A CGT event is a transaction which results in a person making a gain or a loss when they dispose of a CGT asset. Most commonly, this is through the sale of an asset.

Section 102-5 of the Act defines what constitutes a CGT asset. A CGT asset is, ‘any kind of property or any kind of legal or equitable right that is not property’.

A CGT asset can therefore be almost anything which can be owned by a person. This includes land, shares, and investment properties.

When does Capital Gains not apply?

There are some exceptions from what constitutes a CGT asset. A loss or gain made when a person disposes of their main residence is exempt from CGT. A main residence is the address at which a person lives for most of the time. This allows people to buy and sell their own home without being subject to tax implications.

Losses or gains made on assets acquired before 20 September 1985 (when the CGT regime was implemented) are generally also exempt from CGT.

Other possible CGT exceptions include:

  • Cars, motorcycles, or similar. These kinds of assets may be subject to state or territory capital gains tax, also known as stamp duty;
  • Collectable items that cost less than $500;
  • Decorations awarded for valour or bravery (unless they were purchased);
  • A real estate property which was the taxpayer’s main residence. Again, this kind of asset may be subject to state or territory stamp duty.
  • Compensation received for injuries;
  • An asset used to produce exempt income; and
  • Assets purchased for personal use which are sold for less than $10,000.

Timing of events

The time at which a CGT event occurs will vary depending upon the type of asset. If, for example, the asset is purchased outright, the date of the purchase will be the relevant date for calculating CGT. If the asset is a house or land, the relevant date is the date the parties enter into the purchase contract, not the settlement date.

Complying with CGT requirements

People who acquire a CGT asset, such as an investment property, should keep all receipts and accurate records of any expenses, transactions, and repairs in relation to the property. This will allow them to accurately calculate any capital gain or capital loss when the asset is sold later.

CGT can involve complex rules and calculations, such as when a person acquires a CGT asset as a gift, for less than its market value from a family member or friend, or when an investment property has been a person’s main residence for only part of the time they owned it. When such complications arise, you should seek professional advice in relation to your CGT obligations.

Calculating CGT

Calculating capital gains or capital losses can be complex. For more information, refer to our article Calculating Capital Gains Tax.

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